OpenSourceCMS is a fantastically useful facility if you are considering hosting a CMS. It contains hundreds of open-source CMS systems that you can try from both user and administrator perspectives before you install. Categories include CMS/portal, e-learning, e-commerce, blogs, forums, image galleries and wikis. All demos are deleted and reinstalled every two hours, meaning you can really 'test drive' any of the systems and it will be reset to initial install status every couple of hours.